Hi Bill,
Here are some things you might try:
1. Look at other, published illustrators' websites. Note their styles. Maybe you just need an updated portfolio.
2. Attend conferences (even virtual), so you can get your work in front of art directors and editors, and so you can get feedback.
3. Send postcards to editors/art directors. Showcase your best work on the front and list your contact info on the back. Resend twice a year.
4. Apply to illustrate for book packagers and educational publishers.
5. Go to independent publishers' websites and find out how to submit your work.
6. Send your information to children's magazines. Get some credits doing magazine illustrating.
7. Chat with published illustrators, if you can make a genuine connection. Ask for feedback, if it seems appropriate (but no stalking!).
Good luck. Hope this gives you some ideas!
Jody